[2000zx3sct]

so a couple days ago i replaced my battery terminal connectors , drove the car for a couple of days everything was fine. Today i drove to school , from burlington to brantford .... everything was fine up until i got off the highway . I turned off the highway then the car started to sputter , then i looked at my gas gauge and i realised that its on the line, so i figured ill get gas after my first class... on the way the car started sputtering like crazy...etc.etc.
So i parked the car and after class i went to go start it and nothing... wont even turn over..... my question is am i out of gas or is the battery dead...... contemplating whether or not i should walk to the nearest gas station. funny thing is the gas light usually goes on before hand , there was no light on this time. any ideas. i would of stopped for gas but brantford doesnt have many gas stations close by on this paticular exit. ive never ran out of gas before so im not sure.